Home / 12,159.16-16,790.70-9,169.88

Finding the Fourth Proportional to 12,159.16, 16,790.70 and 9,169.88

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Solution

The fourth proportional to 12,159.16, 16,790.70 and 9,169.88 is: 12,662.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.16 : 16,790.70 = 9,169.88 : x
  2. Step 2: Convert to fraction form
    12,159.16/16,790.70 = 9,169.88/x
  3. Step 3: Cross multiply
    12,159.16x = 16,790.70 × 9,169.88
  4. Step 4: Simplify right side
    12,159.16x = 153,968,704.12
  5. Step 5: Solve for x
    x = 153,968,704.12/12,159.16
  6. Step 6: Final answer
    x = 12,662.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.